Company response via Facebook (October 2012):
"Only our casks at this point are not vegan friendly, but everything else is."

Company email (October 2011):
"Our production beer is only manufactured in one place and it is vegan friendly. Two of my best friends are vegans and I made sure of this. The only product we make that is not vegan friendly is our casked beers, but that is only due to the cleaning. So our draft and bottles are all good."